Automobile-transmission lock.



H. P TAYLOR,

AUTOMOBILE TRANSMISSION LOCK. APPLlCMmN FILED HovfaoLwIr.

mmm 06u15, 1918.

2 SHEETS--SHEET I.

H. P. TAYLORl AUTQMGBILE TRANSMISSION LQGK, APPLICATION FILED NOV.30.19|?.

Patented Oct. 15, 1918.

2 SHEETSm-SHEET 2.

tnntrim STATES PATENT orme-n.-

HARRY 1. mAYLoa, or Los ANGELES, CALIFORNIA.

'.AUToMoBILE-'rnANsnrssxoN Loox.

To ZZ whom it may concern:

Be it known that I, HARRY P; TAYLOR, a `citizen of the VUnited States,residing at Los `"Angeles, in the county of Los Angeles and 5 State ot'California; have invented a certain new and useful Improvement inAntomobile-'lrans1nission Locks, of which the follow'in is a full,clear, concise, and exact description, reference being had to theaccompanying drawings, forming a part of this specification.

M'firiv'en'tion relates to automobile trans mission locks.

N umerons locks have been devised for locking the transmission mechanismof auto mobilesVV to' safeguard `them against theft, some adapted-tolock the transmission controls and some adaptedto operate within the`translnissionhousing in direct engagement 20 `\vith"the transmissiongearing.

ofthe latter type, that isfinhe transmission hol'ising,` but .ffcanebeVquickly.. andV easily "tho'utany alteration' :of the o housing and`withont .necessi- -ofski .led labor. In this pard sale as a naccessory,as it can.

ythe carfo- Wn'er himself.

V rifrllff impossible to remove the lock .V 'Nw'hiletis the locked orset position.

L ll.'Ihe','lockis intended to lock .the transmis- "'s''on "gears infyneutral, though it might be` otherwise` arranged, so that the car may be`pushed'.agslhuirtdistance'as from in front-of` p a?"bnildingforont ofthe Way, in order to movably.'

The principal objections to applying the' the locking. mechanismtherein.l

mesh with Specification of Letters Patent. Patent-d 0613-. 191 8.

Application led. November 30, 1917i. erial No. 204531 comply with Vfire'and traffic ordinances prohibiting the practice of locking a oar im!Compliance with this require ment-,'naniely, leaving'the `car free Vtobe moved permits` it to be towed away by auto-- mobile thieves and as adeterrent thereto I contemplate the provision'of an alarm. arranged tobe automatically sounded when the rar is. moved with the .lock set,aocor`ding to the invention described-and claimed in my copendingapplication,l Serial No. 174.727,A tiled .Tune 14th, 1917.

In the appended drawings in which I have illustrated one particularembodiment of my invention,M y

Figure '1 is a plan'vi'ew of a transmission housing with the coverremoved, showing my improved lock inoperative position;

` Fig. 2 is the sameview with the ooi'er. in places Fig. 3 is asectiontaken' on line 3-B of Fig. 1; 'and Fig. 4 is a fragmentarysection through 'one of thelocking forks showing the alarming memberapplied thereto.

The 4trz'ui'smis'sion- 'herein` shown and cle` scribedis not tobeconsidered as the only transmission to which 'my lock is applicable,

but as merely illustrative of -the'general ar rangement V Within a'typical sliding gear transmission.

As shown in Fig. 1. the lower half 1 of the transmission 'housingvsupports the Il'clutch shaft 2,-the countershaft andthe stubshaft 4. Thestubsliaft` is formedv'wit'h a- 'sdiiare Vshaft of the oar which movesWhenever the Wheels are moved.

end fortlie attachment of' a suitable oon- The transmission housing isusually siti ua'ted immediateii7 behind the clutch and directly underthe floor board 5 (Fig. f3) of the front compartment of the car.

The clutch shaft 2 drives the two pnons 6 and 7, theformer of whichisfin constant. the large gear 8 and driires `the counter-shafttherethrough.

he two ears 10 and 11' are mounted for I longitudine imovement onthestubshaft i ifo o lars '12 and=13 integrally4 foimed thereoiwhich areembraced by the'shifting forks` i arranged to be independently actuatedfrom ia transmission control lever.

(itl

u drives the carat low ment of this same gear 'ti nf-of this fork,men'iber will from inspection of Fig.

Movement of the'gear 1l to the left (Fig. l.) meshes the saine with thepinion 18, rig idly mounted on the countershaft 3 and speed forward.Moveto the right meshes it with the idler pinion 20 which is driven fromthe pinion 2l. on the countershaft and drives the car. in the reversedirection.

Movement of the other shiftahle gear l() to the right meshes it with thegear 22, which is rigidly mounted on the r..ounter-v Shaft 3y andplac'es the car in second speed forward.v The. lett hand face of thegear l() has cut therein an internal gear 24 l(see Fig. ,3) which whenthe gear 10 is shifted to the left is adapted to mesh with the p inion 7which is fast onthe clutch sha-ft '2. The engagement of the gears 7" and2l places the eiu'lrh shaft 2 and etnhshaft 4 in direct drive. resultingin high forward f`il'1e il of the cui'. l

Referring to F" of the tr' "n, ii'iihma en'rular ii. llie upper portion26 i-il'erided opening" 2T therethrough, over which ,wils the disk eorer28. This disk is lmlted or Otherwise fastened on the housing. Theoln-iningj' and disk cover 28 has interlocking lugs and slots forpreventin. unauthorized removal of the disk cover which will heheri-eimifterdeserihed. Integrally formed on the under side -of the ci-,.t einer 28 is the inverted pedestalv hearing 29 which projects downadjacent 'the lhiftable gears l() and ll. and has pivoted 'at its end,the fork member 30. The forma- .he apparent i l. It eomprises two endhubs, the locking forks S23-33 "and the actuating arm SLi-'jioined tothe forks 32 and riti 'hy e. lati-,rai weh portion,

The end hubs of the menthe-r embrace the ends of the pedestfi' hearingsSi? pivoted ti reto hy 'the pin 29.

Integral. J formed .on the upper side of the'diek cover 2S is the hollowhose` .36 which arranged :top roliect up through ain aperture'in thetioorl'ioard 5 and terliiinate practically, flush wit-lrthe uppersurface of the Hoor hoard.

eonneetion with the actuatingfarm lili of the fork nnbml'ier (il). `lheenlarg'zyd upper portion L0 of; the plunger 37 contains a pin Theparticulars of thie [oel:

shifting morement of the saine.

. ont of neutral A plunger 3i', is arranged for.reciprocation inthishollow loose and hasv its lo er end hifurcated for a pin and slot'fil Within the pluliger l plunger by its The iilunger inn/ed.against-rota tionl in the Vhoes 26. arey fully describediw-my eopending'.applt cation, Serial No. 174,727 filed .lune ll-ili 1917'and inasmuchas they are not in-rtinenl' to the present application, 'n o descriptionthereof| will he made. Suffice it to say that the pnivls il are normallywithin the confines of the plunger 37 and when the plun ger is"depressed the pawls aretln-own out. by suitable 'spring means andcoineinto en gagenlent with the under edge of the guiding huh 42, as shown inFig. 3, Nlocking the plunger in that position. Insertion of the properkey 43 into the look portion 40 en ahles the pawls 41 to be retractedwithin the confines` of the plunger 3T, through the rotation of the camshaft previously referred to and permits retrograde movement of thesion-spring 4lconfined in the boss 36 he 'tween the reduced guiding hubl2 and the enlarged locked portion 40. -Action and op,g eration of thelock Will now he ln'iefly` summarized. To .lock the transmission, 'thedriver of the car iii-st manipulateshistransmission control lever toplace the shiftable gears l0 and 1l in nent-ral position lasshown inFig. l. Thereupon he depresses the 'plunger 37 with his foot until the.looking coils 4l engage the lower edge of the guiding hub 42 andforthwith the transmission is looked. The Vdepressing of theplunger 37revolves the arnl 34 and-lockingforks and 33 down to their 4fulllneposition` shown in Fig. Ii. In thisl position the forks 32 and 33 areembracing their 'respective gears 10 andy 11g-positively prei'fentingany lhe spacing h'etn'eenj the tin'es o|" arms ofthe lock ing` forksfz-ii-iis made just sufficient to afford a very slight elearance betweenthe arms of the forks-andthe sides of the gear. This insures.. that thegears 'are and will Sli remain in neutral when 4the lock is set. An

etlort to set the lock with -one of the gears results vin one of'thoarms of that associated fork engaging the toothed peril'ihcry of thegear before the` plunger rearhes the bottom of its stroke.` and acci r''lingly the .plunger will not 4.lock and springs bark 'when the driverfoot, thus apinising him" that the trans'- inission not entirely inneutra. V To iinloek the tralismlesionv the'proper key' l-5 inserted inthe locked portion'40- and turned.' This draws the locking pawlspermitting np- Ward n'iovemen-t of the plunger lby the' compressionspring '44 and rotates the'locking the shiftahl'e gears 10 and 11. Astoppin 4!) extends transversely through the plunger 37 and limits huh42. i

'From the foregoing it will he I a p pa rent that when the locking forks52 and 33. eniforks 252 and 33 u a into a )osition olearinor .the upwardmovement' of the. engagement with the guiding ,iii

i i528 .will be held against rotation lief' pedestalV bearing 29.Thiscondition utilized by locking the disk cover '28 to thefupperhousing portion 26. Referring to 2-a'nd 35 the r isk cover 28 1sprovided "tha lural'ty of lugs '47, depending from orede thereof andadapted to co- ,ith a" corresponding number of i: in the periphery ofthe circulal` ;27. In applying the disk cover 28 sfere-passed downthrough the slots distance determined by the coincithe threaded holesfor the screws lation of parts is such that in this po- 'elockin forks32 and 33 are di typver the s iftable ears for lockingngagementtherewith an the lugs Ll are diva between adjacent slots 48.When loo ing forks 32 Vand 33 are in 'locking ngagement with `the gearsand 11 the iskf'lzeover 28de yobviously vprevented from lng.andbythee'ngagement of the hooklugs 47 with the solid peripheral porfthe opening 427, the removal ofthe cover 27 is absolutel .preventeduntil .ga'gement oft-the loc ing forks32f-33 gears 10-#11 is effected.

`hns even if the fastening screws 49 lbe oosened thedisk'cover cannot beremoved s2and 33 preventsdtnrning of the disk y f-t-he lu s 47 cannot bebrought into terwith t e slotseiB.`

permit of full advanta e of this in ter ted or Votherwise 'securelyfastene ,v'ver half.

lyl\-'the. .`disposal of the lock-ing y 33 and the pedestal 'bearing l29he enter "of the disk 'cover 28 t rn' `gogthe'fdiskjcover asbyfoneroi'thefgears 10 or 1 1 through y transmission-control lever.whenithe forks 4'32e-33 lare in locketwogears 10 and l1 are'in thatassumin'g that it were posvne of the gearsslightl 'the y V distance,with the result that th' wonldlock to. the conntersh aft.

kink` `32j-33 need not' necessa' tedfrom the disk 4cover 28, i typivoted on some shaft clon- "e standard equipment of has the 'gearshiftin shaft speclally locatec issie `housing for that particu 4 I haveillustrated' a section h a -modified form" of', locking -fork i hthel`fork member and the in- 'e cover is then revolved a pre-ar-r 49; wth-ichare'then` inserted and drawn up.; Th

bdausethe eccentric position of thelockingtheupper half-of t e gearCasin L sion -a locking member supported from said ouldfnecessarily beshi `ed' a i ed'withfthe alarmpdevice to which.

memos i 'arms thereof, and adapted to move down 70 into the path of theteeth of the shiftable gearwhen 4the fork is revolved to embrace j thegear. The two gears 10 'and 11 always rotate in unison with thepropeller shaft of the ear andV thus if the car is moved when thetransmission lock isset', the teeth on these gears will set; upa rapidflexing of their respective reeds 50 and audibly signal thefact that thecar is not in authorized hands.

l .I ,do not intend to be limited to the particnlar use'o a tongue orreed as a bell, diaphragm4 or any sound producing element might beequally well employed.

I claim: i. The combination with a sliding gear S5 transmission havingone or more shit-table gears of a housing inclosing said transmis,-sion, a cover on said housing,4 a locking Vfork for engagin oneof saidshiftable gears, said lo'icli'inpr ork being pivoted to said cover, 90key releasable locking means snp ortedv on a'itlii cover nand connectedto sailo'cking yor 2. The combination with a sliding gear transmissionhaving one o r. more shift-able forone ofisaid shi-table gearasaidlocking 4fork beingpivoted ito 'said cover, key re leasable lookingrmeansv su orted on said'lo cover and connected to sai locking'fork, saidlocking means being operable to place said lookin A fork in locked engament with t said ehifta le. earzand means oir-prevent-l ingremoval 0%saxdco'ver When seidffork 105 and said gear areso engaged.'

3. The combination with a sliding gear transmission having one or' moreshiftable gears, of'a housing inclosingI said transmishousing andadapted to engage and hold one of saldgears against'shifting movementand vkey releasa'ble locking means supported on said housing andoperable to plaeesaid lool@y ing member in engagement withnsaid shift-5. In 'combination a change speed mecha- 125 4nism having a movableratio changing elei ment, a housing inclosing said' mechanism, anormally disengaged holding member Vadapted to be moved into engagementwith the ratio changingclement when theilatter 130 is in a predeterminedposition, acontrol member for the holding member outside ot' thehousing, and locking means for holding the control inember againstmovement.

(l. In combination a Change speed mechanism having a movable ratiochanging element adapted to slide in a given line, n easing inclosingsaid mechanism, a fork for catching .said element said fork beingmovable at right angles to the line of movement of said element, acontrol element projecting outside of the easing said control elementgoverning said fork and locking means ",for said control element.

7. The combination with a gear transmission having one or more.shift-able gears, of alf: housing inelosing said transmission, a lockingmechanism Within said `housing eomprisin a locking fork adapted toembrace one o? said shiftable gears to restrain it against shiftingmovement and key releasable locking means for engaging and disengagingsaid locking fork with said shift-able gear.

, 8. The combination with a gear transmission having one or moreshiftable gears, of a housing inelosing said transmission and lockingmechanism Within si id housing adapted to engage one oi said gears topreven'. shifting of the same.

9. `Phe combination -With a sliding gear transmission having one ormore. shiftable fears havin()r means under control of the operator foroperatively shifting the gears, of a housing inolosing saidAtransmission, and a fork within said housing operable. to engage andlock said shiftable gears in a predetermined position.. y

10. The combination 'with a sliding gear transmission having one or moreshiftable gears, of a housing inelosing said transmis sion, a cover forsaid housing, lugs on said Cover adapted to register with slots in saidhousing to permit removal of said Cover, locking members Within saidhousing adapted to engage and loelc' said gears against shiftingmovement, and locking means supported on sa'id cover operable to placesaid loekingmembers in engagement withsaid shi'ftable gears, saidlockingmembers when thus engaged holdingr said 'lugs and said slots out ofregistration.

11. In a change speed transmission, af

.,neeted to said locking member and extending housing inclosing saidtransmission, a cover for said housing, means for looking said cover tosaid housing, said means bem releasable by rotation ot' said cover andfoching mechanismv within said housing for lookingy the Change speedtransmission in. neutral, said looking mechanism when set pre; ventingrotation of said 'cover'. v v

v12. In eombinatioili, a housing having a sliding gear transmissiontherein, a eoveron said housing, locking mechanism having a fork forholding one of the slidable gears, said locking mechanism preventingremoval' of said cover when said fork is in' engage-l Inent withv saidgear.

13. In combination, ahousin .having 'a sliding gear transmissiontherein, loeklng mechanism within said housing comprising a fork adaptedto engage andholdone of the gears against shifting movement,'and'a`sound producing member adapted to engage in the teeth of one of saidgears Whenfs'aid fork and said gear are in engagement.

14.. In 'combination a housing having a sliding gear transmissiontherein, locking merhanism within said housing comprising a fork adaptedto engage` and hold one of the gears against shifting movement, 'and areed or tongue adapted to engage in the teeth ot' one or said gears whensaid'fork and said gear are .f1 engagea int. v

15. Inreombinatam, a hou. U havin a able gear 1n sai'd transmission, alocking member 1n sald housing and a plunger conthrough a wall of saidhousing, said plunger being operable' to place said looking member inlocking engagement with said shiftafhle gear. -1 1:

16. Ineombinatioma change speed mech anism having gears and having aeasing inelosing said gea-rs, manual means' eXteiior to the easing forcont/rolling the change speed mechanism, an arm pivoted within saidcasing, means to move said arm into position to prevent operation of thechange speed mechanism and locking means for saidl latter means.

ICO

In` fitness whereof I hereunto subscribe my n. ne this 20th day ofNovember, A. D. 1917;- l

HARRY P. TAYLOR..

